Machine for the manufacture of twisted bars.



R. PORTER. MACHINE FOR THE MANUFACTURE OF TWISTED BARS.

APPLICATION FILED MAR. 311 1911.

1,152,759. PatentedSept. 7, 19 15.

3 SHEETS-SHEET I.

Fu l.

V 10 .L'P C) 8 n r WITNESSES: INVENTOR 11 fl' w- W9 WW v Qm -MMM R PORTER MACHINE FORTHE MANUFACTURE OF TWISTED BARS.

APPLICATION FILED MAR. 31' 1911.

I PatentedSept. 7, 1915. A

3 SHEETS-SHEET 2.

INVENTOR R.PORTERr MACHINE'FOR THE MANUFACTURE OF TWISTED BARS;

APPLICATION FILED MAR. 3h I911.

Patented Sept. 7, 1915.

I Att provernehtlapplied, the fflto Y bar-milLj Thisfranlefconsi's te ofidepieces ZJbg'Jlted, to the; housing 'z hdi eonneetedeby V I I I I I I bait-passes alongthe guide-19, it W111 shlft' 40 i-s a specification; p: t we jcerte n improvements i Q MACHINE'E0R113 ?MA FeeTtIhE 'oF TWiSTED 13535. 3

-TQJGIZZ' whom may cohbemt Be itknowh that I siding at Yoijh et-own,

. certai n new fe a useful l mprgt ementst in v M a hmesl for the Mz hufactuyel of; Twisted are, of ,WhlChy improvemer its tth following @The invention described I er form bindersfot eeiri tL StItIO tUIGS and etherpimposes; and the lhvehtio j hts fer its objectthe twisting bf: the he? asit passee' from the last ipaesfief therefluejihg rdb. The invention is, hereiltztfter morefully described and Inth'e aee'ompzinyi drawing forming" ti part ofthi's s'pecification Eigiu e' 1152a side elevatien ofla, stand ofrollsfhz'tvil lg 2 st mp enlarged m usianid giiides; Fig- VieW Ii'IhIStTating the mechanism I inside {flanviewilefitheinsidefofthei die.

I WhiIe the twisting mechgmismgmay supp cited in" any suitable I manner it; is preg en ietothel ferred to attach the fs'upp ;)i-tit1 housing *1 of thelastgsta tachedithe uprights t which serve tOeiippOrt the bearings 5 'f0r the j oux nal 6 ofthe twisting head 7 and, the bearifigs- 811561 the coun-- tershaft 9. v This shaft isdtiten, through 1 bevelgears m bythe shaft; 1, ,lwhi'ch in turn is driven i1;Iany suitablehiannef prelt'emblyv by j a: reheip 112 from" the ne'elig of eli e" of?v the: 5

reducing rells [as clearly f sho tyn in "Fig M101 2. v A PiIIiOIITIQ On thercdllntefsfheft g 91f; I I II I I I I I the; rolls th'reugh the. chain-11f end sprocket Wheel 11, prevision should-"be made for; Checking: m-"mo ement q ir d-zflo this, end the sprocket Wheel is I secured to a js1eeve261e0se1y mounted ifl'the shaft'yll intermeshes with a, toothed Wheel l3fufe i'ined one or fs'ec'ured to the hollow 'jourfial (fi let the v twisting; heed wg This heed istjprovidedfwith suitable means 'fdrrengegingithe henfer pod manner as.v to tum theusttme" axially forcedh I I I II member of a clutchdevice, the other member I I l of h Qlew in i rmei as 9 1 .27 v

qmzl'nfie preferablyhye'solenoid 18 "dr 0her g t motor capable"Ofjbeingeontrolkd accordance With the movement 'of w sting? btts t'o, for

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J Specificatten efLettersPatentet 1 p t te gpt 9 5f Sleeye is shiftedybttck and tenth a ong the t head tQ'jQpen and close the jaws by; it lever lich' Lean be operated in any suitable by he I the bar opereted on.

r; The tarts difeeted intotthe pass in the, 10113 by the usual or anv suitabl'eiform of t guide "19' mid fromgthe tolls! the ban passes I wrcstgh: at hQlding guide 30 hevingl a -ertipn .7 i 'forr necl with an, internal hape corresponde ingjto the ei ess jsectibnal shape ofthe bar fend adapted tdfprevent thegpor't'i on offthe iba r adjaeent tg the rolls frem turningexielly'butfpepmittingofitsilpngitudinalmet e;

:' by tthe' r'lls As indicated. in Fig 43,} I teil euitef theisolenoid;irieludes two make t andbreak cheviuzesv 21an d 122, ne arrangedto. 'tion' of the" twisting;heaglfFigLfiis? {detail he centi'olled by the-'b'arfbefefeitentersthe v or conrbllseifd theothe'r' so: arranged that itwill be; closed tdexeitefthes sblenpid, at such a ti Of the ha r'thatth l-jtws will not be cldsed ii ti hthe fi o 'nt ehdef the be): has passed a short" distance between them; These" make andbrehk devices are. conveniently formed; 7

byfcenteet springs which j iormally-fstand aptrtana' are adaptedtdbeficlosedby pivot. ally l tjunted dpge23 and 24 so mountedron the uid e's that their M tailsi proj eet' into the p'ztthfdf the=movement of the bar. As the the deg-2'3 lend =e1'0se the'contaet 21, andas the front end, "Off Lthei baJi': approaches the cuithfiithesdleneid I A t ii khw e n ripp he keyed to but movable along the shaft. This collar is engaged by one arm of a bell crank lever 28, the other arm being detachably connected to the core of a solenoid 29 preferably so connected with the circuit of the solenoid 18 as to be controlled by the make example the ho ok may be formed with a cam 33, which as the core is shifted, will move along an abutment 34 and after a predetermined movement of the lever cause the hook to be shifted from engagement with the pin 32. In order to keep the clutch members in engagement with each other after the hook has been shifted the collar 27 is provided with a lug 35, which, while the clutch members are separated, will eX- tend into a recess in a bearing36 of the shaft 11. One wall of the recess is inclined as shown in Fig. 5 and as soon as the clutch members engage and the collar 27 begins to rotate the lug 35 will move along, the inclined wall of the-recess moving the clutch members into further engagement, in which position they are held against the pull of the spring 37 by the bearing of the lug against the end of the bearing 36 of the shaft. After the clutch has made a revolution and the lug comes opposite therecess, the clutch members willbe pulled apart by the spring 37. The angular movement imparted to the twisting head by one revolution of the shaft 11 can be regulated suitably proportioning the earing interposed between the shaft and the head. I

Thejaws will grip the bar until the rear end of the latter has passed beyond the dog 23, which automatically drops permitting the make and break 21 to open and the solenoid to become denergized. The lever 17 will then be shifted by the spring 25 and,

open the jaws of the twisting head. It will be observed that dog 23 is located sucha distance in front of the rolls, that after the jaws have been opened the rolls will continue to feed the bar sufficiently far to move the portion twisted before the jaws were opened, beyond the jaws and into the-larger axial opening through the twisting head and its 1 journal.

' In lieu of employing a rotatable head with jaws having their gripping portions corresponding to the cross-sectional contour of the bar, the jaws may have their surfaces twisted or spirally formed with a pitch corresponding to that of the twist desired in the bar, as shown in Figs. 6, 7 and 8. In

such a construction the head 7 is non rotatably supported between the forks or arms 38. In the construction shown in Figs. 1 to 5 the inner ends of the jaws or slides 14 are made fiat so as to bear uniformly on the sides of the bar. In the construction shown in Figs. 6, 7 and 8 the inner faces of the jaws 39 are spirally formed.

In the construction shown in Figs. 1 to 5 the twist is formed in the bar, between the jaws 14:, and the inner or holding portion of the guide 20 and the pitch of the twist given the bar is dependent on the angular movement of the head after the bar is gripped and the distance between the jaws and the inner or holding portion of the and should be opened before'the bar has passed frombetween the rolls, hence only the controlling contacts 21 and their operating dog 23 are required.

I claim herein as my invention:

1. The combination of a rotatable head, jaws movably mounted in the head, rolls arranged to force the bar between the aws, and means controlled by the barin its movements for shifting the aws.

2. The combination of a rotatable head, jaws movably mounted in the head, rolls arranged to force the bar, between the jaws, and means intermediate the rolls and head and controlled bythebar in its movement for shifting the jaws.

3. In an apparatus for twisting bars, the

combination of a rotatable head, aws movably mounted in the head, rolls arranged to feed a bar between the jaws, and means for opening the jaws arranged in front of the rolls and adapted to be controlled by the bar. r r

' at. The combination of a rotatable head, jaws movably mounted in the head, rolls arranged to force the bar between the aws and means controlled by the bar in its movement for turning the head and shifting the aws. p

In testimony whereof I have hereunto-set my hand.

Witnesses:

J I. THOMPSON,

' W. H. KEN

Copies of this patent may be obtainedfor five cents each, by addressingthe Commissioner of Patents,

I Washington, D. 0."

' ROBERT PORTER. 

